Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 4dd002de396475dbc633cd546b0debaf3053f31b160e52d9b2f56cba82439cd5:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^